Dumb-waiter.



, PATENTED SEPT. 11, 1906. J. H. MILLER.

DUMB WAITER.

APPLICATION FILED 11110.7. 1905.

INVENTOR A TTORNEV.

THE NORRIS PETERS ca, WASHINGTON, a. c,

PATENT OFFICE.

JOHN H. MILLER, OF HAMBURG, PENNSYLVANIA.

DUMB-WAITER.

Specification of Letters Patent.

Patented Sept. 11, 1906.

Application filed December '7, 1905. Serial No. 290,718.

To aZZ whom it puny concern:

Be it known that I, JOHN H. MILLER, a citizen of the United States, residing at Hamburg, in the county of Berks and State of Pennsylvania, have invented new and useful Improvements in Dumb-WVaiters, of which the following is a specification.

This invention relates to improvements in dumb-waiters; and the object of my present invention is to produce a dumb-waiter that will entirely disappear.

In my construction I dispense with all closets or other unsightly contrivances, thus leaving the entire wall-space of the room free to be used. for other purposes. To accomplish this, I have provided'a device that disappears through an opening in the floor and when in lowered position leaves nothing to indicate its presence.

The invention is more fully described in the following specification and clearly illustrated in the accompanying drawings, in which- Figure 1 is a sectional view of a floor, showing my device in position. Fig. 2 is a plan view with the car removed. Fig. 3 is a sectional view taken on line X X of Fig. 1.

The numeral 1 designates a floor, and 2 an opening therein. 3 designates an open-ended box or casing secured in said opening.

4 designates the car.

The box 3 is formed with a plurality of pairs of flanged guide-rollers 5, arranged on two opposite sides and in vertical alinement.

On these sides of the box are also arranged pulleys 6, one on each side, about at the cen ter thereof.

The car 4 is formed in the same rectangular shape as the opening 2, but slightly smaller. The car has the usual shelves and, if desired, can be arranged with a refrigerating-compartment. Along either of two opposite sides I provide pairs of vertical guide strips 7, which guides depend some distance below the car. These guides are joined at their lower extremities by cross-bars 8. These guides are adapted to travel each in a pair of the rollers 5, arranged on the box 3. The cross-bars 8, which are secured upon the outer sides of the guide-strips 7, serve, as will be readily seen by reference to Fig. 1 of the drawings, as stops which by engaging the lowermost guide-pulleys 5 5 limit the upward movement of the car and hold the latter steadily in its elevated position.

The numerals 9 designate weights. These weights are attached to flexible cords 10, which cords pass over the pulleys 6, and their other ends are secured to the cross-bars 8 on the car.

The numeral 11 designates a turnbutton. This device is secured to the floor adjacent to the opening 2 and is adapted to keep the car in lowered position by swinging it around until its one end extends over the top thereof.

The device is simple in construction and its operation is evident. When it is desired. to have the car appear, the button 11 is pushed around with the foot and the weights will raise the car, the distance being regulated by the fall of the weights. When the car is to be returned, it is merely pushed down and held in lowered position by the button 11. The guides and rollers will insure its keeping in proper vertical position and the weights operating on opposite sides will tend to raise it uniformly.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

In a device of the character described, a box or casing provided at the sides thereof with pairs of flanged guide-rollers disposed in vertical alinement and pulleys disposed intermediate the upper and lower guide-rollers, in combination with a verticallymovable car having a projecting top adapted to close said. box and provided at its sides with pairs of vertical guide-strips extending below the lower edge of the car, cross-bars secured exteriorly upon the guide-strips connecting the latter in pairs and adapted to contact with the lowermost guide-rollers to limit the upward movement of the car, flexible elements secured to the cross-bars and guided over the guide-pulleys, and weights connected with said flexible elements.

In testimony whereof I aflix my signature in presence of two subscribing witnesses.

JOHN H. MILLER.

Witnesses:

ED. A. KELLY, M. O. KREIDER. 

